Is there a welding gas interchange chart between linde, praxair and airliquid ?

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Ive never heard of a welding gas with oxygen in the mix. U must be confused. The whole purpose of the inert gas is to keep oxygen away from the weld puttle. Oxygen = oxidation & porosity. Things you dont want .

NOPE... You must be confused... gas selection depends on a number of factors
and oxygen is often added to improve wetting... from what SNOWBIRD posted.. sounds like he is doing Spray Transfer...
here is a link to the Praxair shielding gas manual... it will explain the physics of it... as well as the formulas and the reasoning behind them

Ive never heard of a welding gas with oxygen in the mix. U must be confused. The whole purpose of the inert gas is to keep oxygen away from the weld puttle. Oxygen = oxidation & porosity. Things you dont want .

Originally Posted by eecervantes83

What you need is c-25. Minimal splattrr burns hotter because it contains more co2.

C25 is NO GOOD if you are going to spray transfer on ferrous metals.. most spray arc mixes have less than 10% CO2..

BTW... while not commonly used in the US... the welding process that we refer to here as MIG (Metal Inert Gas)... is often referred to as MAG (Metal Active Gas) in other parts of the world... both O2 and CO2 would be considered "Active Gasses"

Last edited by H80N; 12-06-2013 at 11:50 AM.

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Dear "Snowbird",Oxygen has a low ionization energy and impacts the surface tension of molten metal. As a component in the shielding gases it can therefore get you into spray mode at lower voltage settings and it supports finer droplets resulting in less spatter. On the flip side, out of position welding becomes difficult and you may loose (burn off) some critical alloying elements. Linde offers several three component shielding gases containing Argon, Carbon Dioxide and Oxygen.
Please contact us to evaluate you specific needs at 1 888-256-7359 which will connect you with your local retail location.

correct information

Originally Posted by eecervantes83

Ive never heard of a welding gas with oxygen in the mix. U must be confused. The whole purpose of the inert gas is to keep oxygen away from the weld puttle. Oxygen = oxidation & porosity. Things you dont want .